
import java.awt.Color;

import java.awt.Font;

import java.awt.Graphics;

import java.awt.Image;

import java.awt.Toolkit;

import javax.swing.JFrame;



class Cardioid extends JFrame {



    //定义窗口大小

    private static final int WIDTH = 900;

    private static final int HEIGHT = 800;



    //获取屏幕大小

    private static final int WINDOW_WIDTH = Toolkit.getDefaultToolkit().getScreenSize().width;

    private static final int WINDOW_HEIGHT = Toolkit.getDefaultToolkit().getScreenSize().height;

    //构造函数

    public Cardioid() {

        //设置窗口标题

        super("♥爱心");

        //设置背景色

        this.setBackground(Color.BLACK);

        //设置窗口位置

        this.setLocation((WINDOW_WIDTH - WIDTH) / 2, (WINDOW_HEIGHT - HEIGHT) / 2);

        //设置窗口大小

        this.setSize(WIDTH, HEIGHT);

        //设置窗口布局

        this.setLayout(getLayout());

        //设置窗口可见

        this.setVisible(true);

        //设置窗口的默认关闭方式

        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    }



    //图形函数

    public void paint(Graphics g) {

        //横纵坐标及半径

        double x, y, r;

        //绘制图形

        double z = 0.0;

        double size=10;

        int jj=0;

        while (true) {

            Image image = this.createImage(WIDTH, HEIGHT);

            Graphics pic = image.getGraphics();

            if (jj%2==0){

                size=14.5;

            }else {

                size=15;

            }

            for (int ii = 30; ii > 0; ii--) {

                Color color = new Color(255, 175, (int) (20 * Math.random()) + 220);

                for (int i = 1; i < 400; i++) {

                    int px = (int) (Math.random() * 10);

                    int py = (int) (Math.random() * 10);

                    x = 16 * (Math.sin(z) * Math.sin(z) * Math.sin(z)) * (size) + Math.pow((-1), px) * Math.random() * ii * Math.sqrt(ii) + WIDTH / 2;

                    y = -(13 * Math.cos(z) - 5 * Math.cos(2 * z) - 2 * Math.cos(3 * z) - Math.cos(4 * z)) * (size) + Math.pow((-1), py) * Math.random() * ii * Math.sqrt(ii) + HEIGHT * 1 / 3;

                    z += (Math.PI / 2.0) / 80;

                    pic.setColor(color);

                    pic.fillOval((int) x, (int) y, 2, 2);

                }

                if (ii < 3) {

                    pic.setFont(new Font("楷体", Font.BOLD, 40));//设置字体

                    pic.setColor(Color.pink);//字体颜色

                    //可自定义字体哦

                    pic.drawString("Love You", WIDTH / 2 - 100, 240);//绘制字符串

                    pic.drawString("爱你一万年!", WIDTH / 2, 280);//绘制字符串

                    g.drawImage(image, 0, 0, this);

                }

            }

            jj++;

            if (jj>100){

                break;

            }

            try {

                Thread.sleep(500);

            } catch (InterruptedException e) {

                e.printStackTrace();

            }

        }

    }



    public static void main(String[] args) {

        new Cardioid();

    }



}

 

 

 

 